EX-21.1 7 hii-ex211202310xk.htm EX-21.1 Document
Exhibit 21.1



SUBSIDIARIES OF HUNTINGTON INGALLS INDUSTRIES, INC.
Name of SubsidiaryJurisdiction of OrganizationOwnership Percentage
Avondale Engineering & Construction CompanyDelaware100%
CEMC Enterprise, LLCDelaware100%
Commonwealth Technology Innovation LLCVirginia100%
Enlighten IT Consulting LLCMaryland100%
Fleet Services Holding Corp.Delaware100%
Gray Research, Inc.Alabama100%
H&B Defence Pty LtdAustralia100%
HII (Australia) Holding Company Pty LtdAustralia 100%
HII Energy Inc.Virginia100%
HII Fleet Support Group LLCDelaware100%
HII Mission Technologies Corp.Delaware100%
HII Nuclear Inc.Delaware100%
HII Nuclear Canada, Inc.Canada100%
HII San Diego Shipyard Inc.California100%
HII Services CorporationDelaware100%
HII Technical Solutions CorporationDelaware100%
HII Technical Solutions LimitedUnited Kingdom100%
HII TSD Holding CompanyDelaware100%
HII (US) International Holding CompanyDelaware100%
HII (UK) International Holding Company Ltd.United Kingdom100%
HII Unmanned Systems, Inc.Delaware100%
Huntington Ingalls Engineering Services, Inc.Delaware100%
Huntington Ingalls IncorporatedVirginia 100%
Huntington Ingalls Industries Australia PTY Ltd.Australia100%
Huntington Ingalls Industries Energy and Environmental Services, Inc.Delaware100%
Huntington Ingalls Industries International Shipbuilding, Inc.Nevada100%
Huntington Ingalls Industries Risk Management LLCVermont100%
Huntington Ingalls Unmanned Maritime Systems, Inc.Delaware100%
Idaho Cleanup Completion Partners, LLCDelaware61%
Ingalls Shipbuilding, Inc.Delaware100%
Integrated Mission Excellence, LLCDelaware100%
KHA Defense Solutions PTY LTDAustralia50%
National Tru Solutions LLCDelaware75%
Nationwide Remediation Partners, LLCDelaware51%
Newport News Nuclear BWXT-Los Alamos, LLCDelaware51%
Newport News Nuclear, Inc.Virginia100%
Newport News Reactor Services, Inc.Virginia100%
Newport News Shipbuilding and Dry Dock CompanyDelaware100%
Pantex Production Partners LLCDelaware100%
Pegasus International Holdings, Inc.Texas100%
Pegasus International Services, Inc.Nevada100%
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Exhibit 21.1

Name of SubsidiaryJurisdiction of OrganizationOwnership Percentage
Realion Robotics LLCVirginia 95.1%
TITAN II Inc.Delaware100%
Trusted Security Alliance, LLCMaryland75%
UniversalPegasus International Trinidad and Tobago LimitedTrinidad and Tobago86.5%
Veritas Analytics, Inc.Virginia100%

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